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      07-05-2021, 12:22 PM   #4914
Dave92N54
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Drives: 09 E92 335i 6MT
Join Date: Nov 2020
Location: Westminster, Maryland

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2009 BMW 335i  [10.00]
Quote:
Originally Posted by gster109 View Post
https://datazap.me/u/gster/4th-gear-log

4th gear pull

Concerned with the HPFP pressure dropping as the RPM's climb, anyone have input?

Thanks in adavance.
HPFP looks normal. Interestingly enough, your rail pressure vs boost curve looks exactly like mine. I've seen them look different before, but ours are almost identical (and by this I mean initial spike in rail pressure and then slow decrease to around 2k, and boost being off by about 1psi in the mid range). I've come to the conclusion the boost may be wastegates, when I installed my new boost solenoids and tightened my wastegates it stopped doing it for about 2 days.
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09 E92 335i 6MT / Alpine White / Coral Red / VRSF 7.5" / VRSF DCI / VRSF Catless Downpipes / VTT Charge Pipe / Turbosmart RacePort Gen V / RB OEM Billet Turbos / CD919 Custom Tune / Bilstein PSS9s
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